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Global well-posedness of a class of fourth-order strongly damped nonlinear wave equations

Yanbing Yang, Ahmed Md Salik, Lanlan Qin, Runzhang Xu

Opuscula Mathematica

2019

Vol. 39, no. 2

297--313

Global well-posedness and finite time blow up issues for some strongly damped nonlinear wave equation are investigated in the present paper. For subcritical initial energy by employing the concavity method we show a finite time blow up result of the solution. And for critical initial energy we present the global existence, asymptotic behavior and finite time blow up of the solution in the framework of the potential well. Further for supercritical initial energy we give a sufficient condition on the initial data such that the solution blows up in finite time.